The following paper presents an application of QR code marking of digital iconographical collections for their outdoor mobile access and exploring through the GUIDE@HAND audio tourist guide.

The paper introduces an ecosystem of digital libraries andmobile applications for presenting Bulgarian cultural and science assets.The digital libraries concerned constitute valuable sources of culturalheritage and related scientific results. They include the BulgarianIconographical Digital Library (BIDL), the BellKnow multimedia archiveon bells and the web site of the International Conference on DigitalPresentation and Preservation of Cultural and Scientific Heritage (DIPP).These digital libraries can be accessed online through a Web interface.Due to the spread of mobile devices, there is a need to present thecontents through mobile platforms as well. The GUIDE@HANDapplication family was integrated with the digital libraries for presenting the cultural and scientific assets offline in mobile applications. Interactivemultimedia components (e. g., games, panorama pictures, maps etc.)make the presentation more attractive. The developed mobile applicationsfacilitate learning, presentation and preservation of cultural and scientificobjects.

The paper presents how the VR technology helps tourists in selecting their destinations. The current state-of-the-art service is the result of systematic development activities which has become available in the tourist information office (Tourinform) in the town of Miskolc. The visitors can discover the local sights either on the Web site of the tourist organisation, or in the GUIDE@HAND Miskolc smart phone application, or from now on, in a virtual space due to the Virtual Reality (VR) technology with the help of 3D VR glasses and spherical panorama pictures.